Lagrange Point

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A fun take on the latest science news with enough data to sink your teeth into. Lagrange Point goes beyond the glossy summary and gets in depth with the research from across the world. Brought to you in partnership with the Young Scientists of Australia. Each week for over five years, from community…

Lagrange Point


    • Oct 28, 2023 LATEST EPISODE
    • every other week NEW EPISODES
    • 17m AVG DURATION
    • 557 EPISODES


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    Latest episodes from Lagrange Point

    Episode 555 - Breaking down toxic fungus and learning to live alongside them

    Play Episode Listen Later Oct 28, 2023 20:15


    Fungal invasions taking over living hosts is the thing of science fiction, but the humble button mushroom is taken steps to start. Often a fungi will specialize in symbiosis, invading or decomposing. But Mycena are starting to adapt to do all three. Humans, plants and fungi are in a complicated relationship where we influence the development of each other. The complex fungal toxin patulin is dangerous for humans, but can be broken down by microbes in soil. What can we learn from soil to fight back against fungal toxins and keep our fruit safe. Megumi Mita, Rina Sato, Miho Kakinuma, Hiroyuki Nakagawa, Toshiki Furuya. Isolation and characterization of filamentous fungi capable of degrading the mycotoxin patulin. MicrobiologyOpen, 2023; 12 (4) DOI: 10.1002/mbo3.1373 Christoffer Bugge Harder, Emily Hesling, Synnøve S. Botnen, Kelsey E. Lorberau, Bálint Dima, Tea von Bonsdorff‐Salminen, Tuula Niskanen, Susan G. Jarvis, Andrew Ouimette, Alison Hester, Erik A. Hobbie, Andy F. S. Taylor, Håvard Kauserud. Mycena species can be opportunist‐generalist plant root invaders. Environmental Microbiology, 2023; 25 (10): 1875 DOI: 10.1111/1462-2920.16398

    Episode 554 - Collaborating to solve Martian Mysteries

    Play Episode Listen Later Oct 21, 2023 14:29


    What caused those large quakes on Mars? How can Mars have big Mars-quakes without plate tectonics? If an impact crater isn't too blame for the Mars quakes what may be the cause. An international collaboration pooled the instruments of many countries Mars Missions to solve a mystery. Even using many different countries space ships, no 'smoking crater' was found that caused a mysterious martian quake. How can we study the ancient martian rivers and oceans using data from old martian missions? Jaroslav Klokočník, Gunther Kletetschka, Jan Kostelecký, Aleš Bezděk. Gravity aspects for Mars. Icarus, 2023; 406: 115729 DOI: 10.1016/j.icarus.2023.115729 Benjamin Fernando, Ingrid J. Daubar, Constantinos Charalambous, Peter M. Grindrod, Alexander Stott, Abdullah Al Ateqi, Dimitra Atri, Savas Ceylan, John Clinton, Matthew Fillingim, Ernest Hauber, Jonathon R. Hill, Taichi Kawamura, Jianjun Liu, Antoine Lucas, Ralph Lorenz, Lujendra Ojha, Clement Perrin, Sylvain Piqueux, Simon Stähler, Daniela Tirsch, Colin Wilson, Natalia Wójcicka, Domenico Giardini, Philippe Lognonné, W. Bruce Banerdt. A Tectonic Origin for the Largest Marsquake Observed by InSight. Geophysical Research Letters, 2023; 50 (20) DOI: 10.1029/2023GL103619

    Episode 553 - E.coli to the rescue and boosting geothermal power

    Play Episode Listen Later Oct 9, 2023 15:15


    E.coli is one of the most studied and versatile bacteria, so how can we make it work for us? Bacteria's ability to generate electricity is well known, but often requires complex conditions. How can we use E.Coli to generate electricity without a complicated setup? Geothermal systems seem to promise unlimited power but sometimes a cold water 'short circuit' ruins the plan. How do you carefully control the efficiency of geothermal power in the extreme temperatures and pressures of the earth? References: Mohammed Mouhib, Melania Reggente, Lin Li, Nils Schuergers, Ardemis A. Boghossian. Extracellular electron transfer pathways to enhance the electroactivity of modified Escherichia coli. Joule, 2023; DOI: 10.1016/j.joule.2023.08.006 Qitao Zhang, Arash Dahi Taleghani. Autonomous fracture flow tunning to enhance efficiency of fractured geothermal systems. Energy, 2023; 281: 128163 DOI: 10.1016/j.energy.2023.128163  

    Episode 552 - Talking to plants and how a jellyfish learns

    Play Episode Listen Later Oct 4, 2023 16:47


    How does a jellyfish manage to see and learn without a large central brain? Like the Scarecrow of Oz, jellyfish are a without a brain but are still able to learn and do great feats. How does the nervous system of a jellyfish learn to dodge and avoid obstacles without a big brain? Plants respond to light, but is it possible to communicate with them about upcoming dangers? Jan Bielecki, Sofie Katrine Dam Nielsen, Gösta Nachman, Anders Garm. Associative learning in the box jellyfish Tripedalia cystophora. Current Biology, 2023; DOI: 10.1016/j.cub.2023.08.056 Bo Larsen, Roberto Hofmann, Ines S. Camacho, Richard W. Clarke, J Clark Lagarias, Alex R. Jones, Alexander M. Jones. Highlighter: An optogenetic system for high-resolution gene expression control in plants. PLOS Biology, 2023; 21 (9): e3002303 DOI: 10.1371/journal.pbio.3002303

    Episode 551 - Boosting your immune system to fight back cancer

    Play Episode Listen Later Sep 25, 2023 15:35


    There are many different types of treatments for cancer, all of them with pros and cons. Enhancing our anti cancer toolbox requires careful testing to help reduce side effects. CAR-T takes your immune cells and boosts them to help fight cancer, but can have some pretty nasty side effects. By carefully coating CAR-T cells you can fight back against cancer and limit the chance of a cytokine storm or neurotoxicity . Ningqiang Gong, Xuexiang Han, Lulu Xue, Rakan El-Mayta, Ann E. Metzloff, Margaret M. Billingsley, Alex G. Hamilton, Michael J. Mitchell. In situ PEGylation of CAR T cells alleviates cytokine release syndrome and neurotoxicity. Nature Materials, 2023; DOI: 10.1038/s41563-023-01646-6

    Episode 550 - Cosmic Collisions and galactic devouring

    Play Episode Listen Later Sep 10, 2023 16:00


    What happens when two massive planets collide? How can you end up with a gas giant that's super dense and heavy? how can a planet the size of Neptune be as dense as steel? What happens when two giant planets collide at high speed? Watching a black hole devour a star, one bite at a time.  Luca Naponiello, Luigi Mancini, Alessandro Sozzetti, Aldo S. Bonomo, Alessandro Morbidelli, Jingyao Dou, Li Zeng, Zoe M. Leinhardt, Katia Biazzo, Patricio E. Cubillos, Matteo Pinamonti, Daniele Locci, Antonio Maggio, Mario Damasso, Antonino F. Lanza, Jack J. Lissauer, Karen A. Collins, Philip J. Carter, Eric L. N. Jensen, Andrea Bignamini, Walter Boschin, Luke G. Bouma, David R. Ciardi, Rosario Cosentino, Silvano Desidera, Xavier Dumusque, Aldo F. M. Fiorenzano, Akihiko Fukui, Paolo Giacobbe, Crystal L. Gnilka, Adriano Ghedina, Gloria Guilluy, Avet Harutyunyan, Steve B. Howell, Jon M. Jenkins, Michael B. Lund, John F. Kielkopf, Katie V. Lester, Luca Malavolta, Andrew W. Mann, Rachel A. Matson, Elisabeth C. Matthews, Domenico Nardiello, Norio Narita, Emanuele Pace, Isabella Pagano, Enric Palle, Marco Pedani, Sara Seager, Joshua E. Schlieder, Richard P. Schwarz, Avi Shporer, Joseph D. Twicken, Joshua N. Winn, Carl Ziegler, Tiziano Zingales. A super-massive Neptune-sized planet. Nature, 2023; DOI: 10.1038/s41586-023-06499-2 P. A. Evans, C. J. Nixon, S. Campana, P. Charalampopoulos, D. A. Perley, A. A. Breeveld, K. L. Page, S. R. Oates, R. A. J. Eyles-Ferris, D. B. Malesani, L. Izzo, M. R. Goad, P. T. O'Brien, J. P. Osborne, B. Sbarufatti. Monthly quasi-periodic eruptions from repeated stellar disruption by a massive black hole. Nature Astronomy, 2023; DOI: 10.1038/s41550-023-02073-y  

    Episode 549 - Water infrastructure and Archaeology

    Play Episode Listen Later Sep 1, 2023 18:57


    Infrastructure projects and large engineering projects can lead to archaeological discoveries. When you start digging a large sewer network, the last thing you suspect to find is 1,000s of fossils. Large water projects in Auckland managed to discover new species and shed light on New Zealand 3 million years ago. We often think of modern plumbing as being a sign of the modern era, but in ancient China, a community banded together to build their own drainage network.  References:​ Bruce W. Hayward, Thomas F. Stolberger, Nathan Collins, Alan G. Beu, Wilma Blom. A diverse Late Pliocene fossil fauna and its paleoenvironment at Māngere, Auckland, New Zealand. New Zealand Journal of Geology and Geophysics, 2023; 1 DOI: 10.1080/00288306.2023.2243234 Chunxia Li, Yanpeng Cao, Chi Zhang, Ling Qin, Zhenhua Deng, Yan Chen, Shuzheng Zhu, Wei Li, Junping Yuan, Hai Zhang, Yijie Zhuang. Earliest ceramic drainage system and the formation of hydro-sociality in monsoonal East Asia. Nature Water, 2023; DOI: 10.1038/s44221-023-00114-4

    Episode 548 - A paradise for Octopi at the base of a volcano

    Play Episode Listen Later Aug 27, 2023 16:27


    At the depths of the ocean, in freezing waters there is somehow a paradise for Octopi. Off the coast of Monterey, an extinct underwater volcano creates just the right conditions for an absurd number of octopi to breed, nest and survive despite the freezing temperatures. With water near freezing, an octopi egg would normally take 8 years to hatch, but how are they managing to survive in huge numbers?   References: James P. Barry, Steven Y. Litvin, Andrew DeVogelaere, David W. Caress, Chris F. Lovera, Amanda S. Kahn, Erica J. Burton, Chad King, Jennifer B. Paduan, C. Geoffrey Wheat, Fanny Girard, Sebastian Sudek, Anne M. Hartwell, Alana D. Sherman, Paul R. McGill, Aaron Schnittger, Janet R. Voight, Eric J. Martin. Abyssal hydrothermal springs—Cryptic incubators for brooding octopus. Science Advances, 2023; 9 (34) DOI: 10.1126/sciadv.adg3247

    Episode 547 - Concussions - How long do you really have to wait?

    Play Episode Listen Later Aug 17, 2023 16:10


    How long do you really have to wait after a concussion? Athletes are always keen to get back in the game after a head knock, but how long do they really need to wait? When trying to assess and track a concussion getting hard data is difficult. Using special headbands and measuring the pulse of the brain you can get an insight into concussion recovery. Concussion symptoms can disappear long before the brain has truly recovered. If you are slowly recovering fro a concussion how long will you need to wait? Cathra Halabi, Lynda Norton, Kevin Norton, Wade S. Smith. Headpulse Biometric Measures Following Concussion in Young Adult Athletes. JAMA Network Open, 2023; 6 (8): e2328633 DOI: 10.1001/jamanetworkopen.2023.28633 Thomas Walker McAllister, Steven P Broglio, Barry P Katz, Susan M Perkins, Michelle LaPradd, Wenxian Zhou, Michael A McCrea. Characteristics and Outcomes of Athletes With Slow Recovery From Sport-Related Concussion: A CARE Consortium Study. Neurology, 2023; 10.1212/WNL.0000000000206853 DOI: 10.1212/WNL.0000000000206853

    Episode 546 - What's going on with whale's behaviour

    Play Episode Listen Later Aug 11, 2023 14:33


    When whales and humans interact the results can be confusing and messy for both sides. Whether it be noisy boat propellers, or orcas on a collision course, humans and whales don't always get on. How can we monitor and track how whales respond to humans. The best ways of monitoring animals is often with tags, but the very act of tagging can ruin what you're trying to study.  Lars Reiter Nielsen, Outi M. Tervo, Susanna B. Blackwell, Mads Peter Heide‐Jørgensen, Susanne Ditlevsen. Using quantile regression and relative entropy to assess the period of anomalous behavior of marine mammals following tagging. Ecology and Evolution, 2023; 13 (4) DOI: 10.1002/ece3.9967

    Episode 545 - Phages taking the fight to bacteria

    Play Episode Listen Later Jul 31, 2023 10:57


    Antibiotic resistance is a global challenge, but the solution may come from the natural predator of bacteria. Bacterial infections can be nasty, but you can engineer a phage to help better identify and treat them. Knowing exactly which bacteria is causing problems can help doctors target treatment more precisely and tailor antibiotic courses. Using bacteriophages  you can quickly identify and then eliminate common types of bacterial infections. Jiemin Du, Susanne Meile, Jasmin Baggenstos, Tobias Jäggi, Pietro Piffaretti, Laura Hunold, Cassandra I. Matter, Lorenz Leitner, Thomas M. Kessler, Martin J. Loessner, Samuel Kilcher, Matthew Dunne. Enhancing bacteriophage therapeutics through in situ production and release of heterologous antimicrobial effectors. Nature Communications, 2023; 14 (1) DOI: 10.1038/s41467-023-39612-0 Susanne Meile, Jiemin Du, Samuel Staubli, Sebastian Grossmann, Hendrik Koliwer-Brandl, Pietro Piffaretti, Lorenz Leitner, Cassandra I. Matter, Jasmin Baggenstos, Laura Hunold, Sonja Milek, Christian Guebeli, Marko Kozomara-Hocke, Vera Neumeier, Angela Botteon, Jochen Klumpp, Jonas Marschall, Shawna McCallin, Reinhard Zbinden, Thomas M. Kessler, Martin J. Loessner, Matthew Dunne, Samuel Kilcher. Engineered reporter phages for detection of Escherichia coli, Enterococcus, and Klebsiella in urine. Nature Communications, 2023; 14 (1) DOI: 10.1038/s41467-023-39863-x

    Episode 544 - Metals recovering from fatigue

    Play Episode Listen Later Jul 24, 2023 14:06


    Cracks in metal can ultimately lead to fatigue failure, but is there a way to unwind the damage? Fatigue failure is a serious problem for everything from bridges to phones so finding a way to tackle it is important. One microcrack can turn into another as a metal fatigues, but what if the cracks could close themselves up again? Can a metal piece itself back together again? Maybe if its in a vacuum. Christopher M. Barr, Ta Duong, Daniel C. Bufford, Zachary Milne, Abhilash Molkeri, Nathan M. Heckman, David P. Adams, Ankit Srivastava, Khalid Hattar, Michael J. Demkowicz, Brad L. Boyce. Autonomous healing of fatigue cracks via cold welding. Nature, 2023; DOI: 10.1038/s41586-023-06223-0

    Episode 543 - Monitoring vital signs without getting in the way

    Play Episode Listen Later Jul 20, 2023 15:50


    Getting an accurate picture of someone's health or vital signs is essential in medicine, but hard to physically do without wires. Invasive health monitoring systems can't provide insights into 'everyday' scenarios. Trying to assess someone's posture, gait and rehabilitation is hard if they're wired into a harness. Smart Pants using fibre optics can help rehabilitation by fully understanding the problem points in high detail. Non-contact monitoring of breathing and other vital signs is important in a hospital setting to reduce risk, but camera based solutions are too variable. How can you 'remove the wires' in a hospital setting? By using LiDAR and RF radar.  Leticia Avellar, Anselmo Frizera, Arnaldo Leal-Junior. POF Smart Pants: a fully portable optical fiber-integrated smart textile for remote monitoring of lower limb biomechanics. Biomedical Optics Express, 2023; 14 (7): 3689 DOI: 10.1364/BOE.492796 Ziqian Zhang, Yang Liu, Tegan Stephens, Benjamin J. Eggleton. Photonic radar for contactless vital sign detection. Nature Photonics, 2023; DOI: 10.1038/s41566-023-01245-6

    Episode 542 - Evolving multicellular life in the lab

    Play Episode Listen Later Jul 10, 2023 15:39


    Its a huge leap from a single celled organism to a complex multicellular beast. So how does evolution manage it? You can evolve humble yeast from a single celled organism into a complex interwoven multicellular one. Over 3,000 generations in the lab, the humble yeast was evolved from microscopic to macroscopic with super strength. Grouping together or splitting apart can offer benefits for organisms, but what environmental pressures cause an organism to go one way or the other?  G. Ozan Bozdag, Seyed Alireza Zamani-Dahaj, Thomas C. Day, Penelope C. Kahn, Anthony J. Burnetti, Dung T. Lac, Kai Tong, Peter L. Conlin, Aishwarya H. Balwani, Eva L. Dyer, Peter J. Yunker, William C. Ratcliff. De novo evolution of macroscopic multicellularity. Nature, 2023; DOI: 10.1038/s41586-023-06052-1 Florian van der Ent, Susann Skagseth, Bjarte A. Lund, Jaka Sočan, Julia J. Griese, Bjørn O. Brandsdal, Johan Åqvist. Computational design of the temperature optimum of an enzyme reaction. Science Advances, 2023; 9 (26) DOI: 10.1126/sciadv.adi0963

    Episode 541 - The building blocks chemistry

    Play Episode Listen Later Jul 3, 2023 15:50


    Chemistry is complicated but it had to start somewhere. The origins of complex chemistry had to be built up from scratch. How did complex compounds form on early earth. How can we replicate the conditions of early earth and watch complex chemistry develop? Peering into chemical reactions is tricky because they can happen so fast.  Zhong Yin, Yi-Ping Chang, Tadas Balčiūnas, Yashoj Shakya, Aleksa Djorović, Geoffrey Gaulier, Giuseppe Fazio, Robin Santra, Ludger Inhester, Jean-Pierre Wolf, Hans Jakob Wörner. Femtosecond proton transfer in urea solutions probed by X-ray spectroscopy. Nature, 2023; DOI: 10.1038/s41586-023-06182-6  

    Episode 540 - On the shoulders of giants

    Play Episode Listen Later Jun 30, 2023 16:40


    The universe scaling work of the NANOGrav team stands on the shoulders of giants to understand giants lurking in our universe. Huge decade spanning scientific projects like NANOGrav are built of ideas and concepts which we can trace back to earlier pioneers. NANOGrav relies on Pulsars to map the universe but the discovery of them can be traced back to one key woman, Jocelyn Bell Burnell. This week we dive into the discovery of Pulsars and how they have been used to make a new way of looking at the universe. Finding a periodic signal in the noise can be helpful but a whole universe them of them can widen our understanding. 

    giants shoulders pulsars jocelyn bell burnell
    Episode 539 - Dangerous but beautiful space weather

    Play Episode Listen Later Jun 20, 2023 16:40


    Weather in space, can seem far away but it's dazzling effects come with some danger. Aurora localised entirely around a satellite can cause a steamy situation for communications. Analysing space weather can lead to better designed satellites capable of withstanding 1-100 year solar storms. It's a balancing act when protecting satellites from solar weather, too much and too little protection can lead to disaster. Meteor showers are beautiful but how do you get one without an icey comet? The only way to get an asteroid to make a lovely meteor shower unfortunately involves a violent collision or big explosion.    Nigel P. Meredith, Thomas E. Cayton, Michael D. Cayton, Richard B. Horne. Extreme Relativistic Electron Fluxes in GPS Orbit: Analysis of NS41 BDD‐IIR Data. Space Weather, 2023; 21 (6) DOI: 10.1029/2023SW003436 W. Z. Cukier, J. R. Szalay. Formation, Structure, and Detectability of the Geminids Meteoroid Stream. The Planetary Science Journal, 2023; 4 (6): 109 DOI: 10.3847/PSJ/acd538  

    Episode 538 - Colossal volcanic eruptions taking out satellites

    Play Episode Listen Later Jun 12, 2023 14:40


    When a volcano erupts we're used to imagining damage from lava, ash and even tsunamis. So why were satellites taken out? The colossal eruptions at Hunga-Tonga in 2022 caused pressure waves that caused damage 1000s of km away and even to satellites. Satellites, long distance radio and GPS all rely on the ionosphere, but large eruptions can wreck havoc and cause disruptions. When a pressure wave spreads out from a volcanic eruption, we can also get similar disruptions to the ionosphere. Sometimes even before shock wave hits. The way our ionosphere protects and responds to stellar radiation can be influenced by big events down here on Earth. Atsuki Shinbori, Takuya Sori, Yuichi Otsuka, Michi Nishioka, Septi Perwitasari, Takuo Tsuda, Atsushi Kumamoto, Fuminori Tsuchiya, Shoya Matsuda, Yoshiya Kasahara, Ayako Matsuoka, Satoko Nakamura, Yoshizumi Miyoshi, Iku Shinohara. Generation of equatorial plasma bubble after the 2022 Tonga volcanic eruption. Scientific Reports, 2023; 13 (1) DOI: 10.1038/s41598-023-33603-3

    Episode 537 - Better batteries that last even in subzero temperatures

    Play Episode Listen Later Jun 6, 2023 15:30


    Batteries power the modern world, but how can we make them more sustainably and last longer. Lithium powers most of our modern batteries but it doesn't cope with the cold. The electrolytes inside lithium ion batteries are powerful but weak when its cold, so what can we use instead? Extracting lithium is carbon intensive and difficult, are there more abundant materials we can use? Calcium based batteries have a higher power density than lithium but finding a suitable electrolyte is a challenge. Kazuaki Kisu, Rana Mohtadi, Shin‐ichi Orimo. Calcium Metal Batteries with Long Cycle Life Using a Hydride‐Based Electrolyte and Copper Sulfide Electrode. Advanced Science, 2023; DOI: 10.1002/advs.202301178 Dong‐Joo Yoo, Qian Liu, Orion Cohen, Minkyu Kim, Kristin A. Persson, Zhengcheng Zhang. Rational Design of Fluorinated Electrolytes for Low Temperature Lithium‐Ion Batteries. Advanced Energy Materials, 2023; DOI: 10.1002/aenm.202204182

    Episode536 - Taking pollution out of the atmosphere

    Play Episode Listen Later May 29, 2023 17:32


    Humans are filling the atmosphere with more and more pollution. How does it get out of the air and where does it go? For complex pollutants in the atmosphere, having a bit of hydroxide around helps break it down but where does it come from? Hydroxide can spontaneously generate in droplets but it doesn't seem to need sunlight's or photo-chemistry. Spontaneous generation of hydroxide in water droplets helps clean up our atmosphere. Which trees are best at cleaning up the air around them? From conifers to broad leave trees which help keep our air clean the best? C is for conifer, and their leaves and needles help capture pollution out of the air.  Broadleaf trees are well...broad and this helps them capture lots of air pollution.    References: Kangwei Li, Yunlong Guo, Sergey A. Nizkorodov, Yinon Rudich, Maria Angelaki, Xinke Wang, Taicheng An, Sebastien Perrier, Christian George. Spontaneous dark formation of OH radicals at the interface of aqueous atmospheric droplets. Proceedings of the National Academy of Sciences, 2023; 120 (15) DOI: 10.1073/pnas.2220228120 H. Pleijel, J. Klingberg, B. Strandberg, H. Sjöman, L. Tarvainen, G. Wallin. Differences in accumulation of polycyclic aromatic compounds (PACs) among eleven broadleaved and conifer tree species. Ecological Indicators, 2022; 145: 109681 DOI: 10.1016/j.ecolind.2022.109681

    Lagrange Point Episode 535 - Trees growing faster during droughts

    Play Episode Listen Later May 24, 2023 12:11


    As our climate changes extreme weather events become more common, but what does this mean for ecosystems? Ecosystems and plants that have adapted to on extreme climate, can thrive in another. An adaption that helps you survive in extreme cold can be very helpful when there is a drought. There is a balancing act between choosing when to grow and when to conserve energy. Plants carefully manage their resources in extreme drought and extreme cold.  Joan Dudney, Andrew M. Latimer, Phillip van Mantgem, Harold Zald, Claire E. Willing, Jonathan C. B. Nesmith, Jennifer Cribbs, Elizabeth Milano. The energy–water limitation threshold explains divergent drought responses in tree growth, needle length, and stable isotope ratios. Global Change Biology, 2023; DOI: 10.1111/gcb.16740

    Episode 534 - Finding a rocky asteroid belt around another star

    Play Episode Listen Later May 15, 2023 13:02


    Asteroid belts are harder to find than Sci-fi would have you believe. Spotting an asteroid belt is easier in the outer solar system, but closer in it gets a bit more blurry. Using the JWT we can use more than just visible light to find tricky interstellar objects. Asteroid belts are messy but they can tell us a lot about a solar system by what they leave in their wake.  Reference: András Gáspár, Schuyler Grace Wolff, George H. Rieke, Jarron M. Leisenring, Jane Morrison, Kate Y. L. Su, Kimberly Ward-Duong, Jonathan Aguilar, Marie Ygouf, Charles Beichman, Jorge Llop-Sayson, Geoffrey Bryden. Spatially resolved imaging of the inner Fomalhaut disk using JWST/MIRI. Nature Astronomy, 2023; DOI: 10.1038/s41550-023-01962-6

    Episode 533 - Bacteria melting ice and changing the planet

    Play Episode Listen Later May 11, 2023 12:56


    How can tiny bacteria change the entire planet? Greenland is beautiful and covered in glaciers, but they are turning more and more dark and black. Black algae is tinting glaciers in Greenland darker, and causing changes in our climate. The more our climate changes, the easier it is for algae to thrive in glacier runoff and change the colours of the glaciers. Algae can survive in strange locations on earth, what can that teach us about microorganisms across the solar system?  James A. Bradley, Christopher B. Trivedi, Matthias Winkel, Rey Mourot, Stefanie Lutz, Catherine Larose, Christoph Keuschnig, Eva Doting, Laura Halbach, Athanasios Zervas, Alexandre M. Anesio, Liane G. Benning. Active and dormant microorganisms on glacier surfaces. Geobiology, 2022; 21 (2): 244 DOI: 10.1111/gbi.12535

    Episode 532 - Bacteria reviving themselves when the time is right

    Play Episode Listen Later May 4, 2023 11:00


    Bacteria are masters of survival, pausing and shielding themselves when times get tough. So how do they know when to wake up? The mechanisms bacteria use to survive harsh conditions are one of the reasons they're able to survive so well. The protective layers and pausing all activity inside the cell enable the bacteria, as a spore, to survive very long periods of time. After suspending themselves through a tough period of time,how do bacteria wake themselves up?   Yongqiang Gao, Jeremy D. Amon, Lior Artzi, Fernando H. Ramírez-Guadiana, Kelly P. Brock, Joshua C. Cofsky, Deborah S. Marks, Andrew C. Kruse, David Z. Rudner. Bacterial spore germination receptors are nutrient-gated ion channels. Science, 2023; 380 (6643): 387 DOI: 10.1126/science.adg9829

    Lagrange Point Episode 531 - Measuring the expansion of the universe

    Play Episode Listen Later Apr 24, 2023 18:21


    Understanding the future of the universe requires peering into the past. How quickly the universe is expanding has been an active area of science since the 1920s, with several prizes and breakthroughs. Each time we get new or more accurate measurements it forces scientists to re-evaluate the assumptions and formulas. These breakthroughs then need to be confirmed with follow up studies. The measurement of Hubble's constant using supernova won a Nobel Prize in 2011, and new gravitational lensing measurements have provided extra confirmation to those numbers. Dark matter can influence a lot in our universe, but measuring it is difficult but using lensing techniques a more accurate measurement can be derived. Mauricio Cruz Reyes, Richard I. Anderson. A 0.9% calibration of the Galactic Cepheid luminosity scale based on Gaia DR3 data of open clusters and Cepheids. Astronomy & Astrophysics, 2023; 672: A85 DOI: 10.1051/0004-6361/202244775 Princeton University. (2023, April 7). How to see the invisible: Using the dark matter distribution to test our cosmological model. ScienceDaily. Retrieved April 14, 2023 from www.sciencedaily.com/releases/2023/04/230407215847.htm

    universe dark expansion measuring nobel prize hubble science daily lagrange points astronomy astrophysics cepheids
    Episode 530 - Fully recyclable electronics

    Play Episode Listen Later Apr 17, 2023 18:35


    Electronics power the modern world, but they come at a high environmental and energy cost. E-waste a serious problem as many of the elements in modern electronics cannot be easily recycled. Is there a way to produce electronics that are more environmentally friendly? Is it possible to make a circuit board or more simply even a transistor that doesn't rely on silicon? Can you imagine a Silicon Valley without actual silicon? Its possible to make recyclable electronics without silicon and instead relying only on carbon and cellulose. How can you get away from the use of chemicals or high heat in circuit fabrication? Nicholas X. Williams, George Bullard, Nathaniel Brooke, Michael J. Therien, Aaron D. Franklin. Printable and recyclable carbon electronics using crystalline nanocellulose dielectrics. Nature Electronics, 2021; DOI: 10.1038/s41928-021-00574-0 Shiheng Lu, Brittany N. Smith, Hope Meikle, Michael J. Therien, Aaron D. Franklin. All-Carbon Thin-Film Transistors Using Water-Only Printing. Nano Letters, 2023; 23 (6): 2100 DOI: 10.1021/acs.nanolett.2c04196

    Episode 529 - Listening in on conversations inside your body

    Play Episode Listen Later Apr 10, 2023 17:36


    Your body is constantly communicating about what's happening outside and inside of it, but how can we listen in. When your immune system is responding to a virus, or a wound is healing, there are lots of signals to decode if only we could hear them. By amplifying the signals inside your body with special folding DNA and transistors we can understand how our body responds. The brain's neural networks are a treasure trove of information if we're able to blend in and listen. Using a microbot you can get precise information from on inside in the brain rather than relying on external information. Xudong Ji, Xuanyi Lin, Jonathan Rivnay. Organic electrochemical transistors as on-site signal amplifiers for electrochemical aptamer-based sensing. Nature Communications, 2023; 14 (1) DOI: 10.1038/s41467-023-37402-2 Eunhee Kim, Sungwoong Jeon, Yoon‐Sil Yang, Chaewon Jin, Jin‐young Kim, Yong‐Seok Oh, Jong‐Cheol Rah, Hongsoo Choi. A Neurospheroid‐Based Microrobot for Targeted Neural Connections in a Hippocampal Slice. Advanced Materials, 2023; 35 (13) DOI: 10.1002/adma.202208747

    Episode 528 - How our senses pass information to our brains

    Play Episode Listen Later Apr 6, 2023 17:39


    How does your body pass information along to your brain? The thalamus connects those sensory inputs back to your cerebral cortex but it's a lot sparser than you'd think. The synapses that link your senses to your cortex are often weak and rare, but their diversity gives them a boost. Lots of diverse synapses with different strengths help you perceive the world more clearly. Do both your eyes get equally treated by your brain? Aygul Balcioglu, Rebecca Gillani, Michael Doron, Kendyll Burnell, Taeyun Ku, Alev Erisir, Kwanghun Chung, Idan Segev, Elly Nedivi. Mapping thalamic innervation to individual L2/3 pyramidal neurons and modeling their ‘readout' of visual input. Nature Neuroscience, 2023; DOI: 10.1038/s41593-022-01253-9 Joel Bauer, Simon Weiler, Martin H.P. Fernholz, David Laubender, Volker Scheuss, Mark Hübener, Tobias Bonhoeffer, Tobias Rose. Limited functional convergence of eye-specific inputs in the retinogeniculate pathway of the mouse. Neuron, 2021; DOI: 10.1016/j.neuron.2021.05.036

    Episode 527 - Concrete in space from blood, sweat, tears and chips

    Play Episode Listen Later Mar 27, 2023 14:52


    Building a habitat on Mars or the Moon is hard work, but it's a lot easier if you can make your own building materials. Animal blood has historically been used as a binding agent for mortar, so could human blood help on Mars? You can make your own building materials on the Moon or Mars that are far stronger than on earth especially if you add tears and blood. Maybe you don't want to use blood in when building your martian home, but would you sacrifice your potato chips? Potato chips and some extra salt will can make for super strong building materials on the Moon or Mars. Is there ways to enhance the performance of concrete by using other industries waste byproducts? All waste has to be re-used when you're in space, but here on earth using waste water and waste steel can help boost concrete. Aled D. Roberts, Nigel S. Scrutton. StarCrete: A starch-based biocomposite for off-world construction. Open Engineering, 2023; 13 (1) DOI: 10.1515/eng-2022-0390 Aled D. Roberts, Dominic R. Whittall, Rainer Breitling, Eriko Takano, Jonny J. Blaker, Sam Hay, Nigel S. Scrutton. Blood, sweat and tears: extraterrestrial regolith biocomposites with in vivo binders. Materials Today Bio, 2021; 100136 DOI: 10.1016/j.mtbio.2021.100136 Rajeev Roychand, Biplob Kumar Pramanik, Guomin Zhang, Sujeeva Setunge. Recycling steel slag from municipal wastewater treatment plants into concrete applications – A step towards circular economy. Resources, Conservation and Recycling, 2020; 152: 104533 DOI: 10.1016/j.resconrec.2019.104533

    Episode 526 - Capturing biological process in action

    Play Episode Listen Later Mar 20, 2023 18:09


    Seeing how something happens makes it much easier to understand. Biological process can be very hard to capture with images or video. Understanding how a protein requires thinking in 3D but to take images of them we often have to 'snap freeze' them in place. How can lasers, ions and quantum mechanics be used to help capture a protein in motion. PCR based diagnostics tests are accurate but require a lot of setup and expertise. Can you make a PCR test more like a point of care test using bio-luminescence. Shiny Maity, Brad D. Price, C. Blake Wilson, Arnab Mukherjee, Matthieu Starck, David Parker, Maxwell Z. Wilson, Janet E. Lovett, Songi Han, Mark S. Sherwin. Triggered Functional Dynamics of AsLOV2 by Time‐Resolved Electron Paramagnetic Resonance at High Magnetic Fields. Angewandte Chemie International Edition, 2023; 62 (13) DOI: 10.1002/anie.202212832 Harmen J. van der Veer, Eva A. van Aalen, Claire M. S. Michielsen, Eva T. L. Hanckmann, Jeroen Deckers, Marcel M. G. J. van Borren, Jacky Flipse, Anne J. M. Loonen, Joost P. H. Schoeber, Maarten Merkx. Glow-in-the-Dark Infectious Disease Diagnostics Using CRISPR-Cas9-Based Split Luciferase Complementation. ACS Central Science, 2023; DOI: 10.1021/acscentsci.2c01467

    Episode 525 - Life in a radiation exclusion zone and #2023MMM

    Play Episode Listen Later Mar 13, 2023 16:42


    Life in a radiation exclusion zone is challenging but not impossible. We find out about tales of survival, endurance and adaption in radiation zones and in March Mammal Madness. How does life adapt to high exposure of toxic chemicals, radiation and heavy metals? Studying the DNA of differing animal populations in Chernobyl helps researchers understand how life responds to environmental disasters.  What's more stressful for wild boar - humans or a radiation disaster zone? Around Fukashima wild boar and snakes are thriving in what is classified as a radiation disaster zone. We also preview March Mammal Madness and find out about the different divisions in this year's edition. March Mammal Madness resources compiled by Arizona State University https://libguides.asu.edu/marchmammalmadness Megan N. Dillon, Rachael Thomas, Timothy A. Mousseau, Jennifer A. Betz, Norman J. Kleiman, Martha O. Burford Reiskind, Matthew Breen. Population dynamics and genome-wide selection scan for dogs in Chernobyl. Canine Medicine and Genetics, 2023; 10 (1) DOI: 10.1186/s40575-023-00124-1 Kelly Cunningham, Thomas G. Hinton, Jared J. Luxton, Aryn Bordman, Kei Okuda, Lynn E. Taylor, Josh Hayes, Hannah C. Gerke, Sarah M. Chinn, Donovan Anderson, Mark L. Laudenslager, Tsugiko Takase, Yui Nemoto, Hiroko Ishiniwa, James C. Beasley, Susan M. Bailey. Evaluation of DNA damage and stress in wildlife chronically exposed to low-dose, low-dose rate radiation from the Fukushima Dai-ichi Nuclear Power Plant accident. Environment International, 2021; 155: 106675 DOI: 10.1016/j.envint.2021.106675  

    Episode 524 - Bacteria's sneaky 1-2 punch to get into your brain

    Play Episode Listen Later Mar 6, 2023 18:39


    Bacteria uses a clever 1-2 punch to make it through our central nervous systems defenses. The way bacteria can get through the outer layers of the meninges relies on knowing exactly what how the brain will respond to infection. Painful headaches are a key part of meningitis, but that pain response is actually opening the door for a sneak attack. Understanding how bacterial infections get into the brain will help develop new treatment pathways for meningitis. When bacteria come under attack themselves, they use signalling pathways that we can learn from. By studying the way bacteria defend themselves we could find common tools to use to precisely regulate human cells. Felipe A. Pinho-Ribeiro, Liwen Deng, Dylan V. Neel, Ozge Erdogan, Himanish Basu, Daping Yang, Samantha Choi, Alec J. Walker, Simone Carneiro-Nascimento, Kathleen He, Glendon Wu, Beth Stevens, Kelly S. Doran, Dan Levy, Isaac M. Chiu. Bacteria hijack a meningeal neuroimmune axis to facilitate brain invasion. Nature, 2023; DOI: 10.1038/s41586-023-05753-x Hannah E. Ledvina, Qiaozhen Ye, Yajie Gu, Ashley E. Sullivan, Yun Quan, Rebecca K. Lau, Huilin Zhou, Kevin D. Corbett, Aaron T. Whiteley. An E1–E2 fusion protein primes antiviral immune signalling in bacteria. Nature, 2023; DOI: 10.1038/s41586-022-05647-4

    Episode 523 - Sinking carbon out of seawater and carbon storage in wood

    Play Episode Listen Later Feb 27, 2023 18:40


    Our oceans and waterways are our largest carbon sinks and they're overflowing with CO2. Too much CO2 in our waterways can cause tremendous local damage, but there may be ways to clean that up. Using a cyclic process without messy membranes you can get water to release the CO2 captured inside. Extracting excess CO2 from oceans could be possible with only some clever chemistry cells with no waste byproducts. Now that you've got CO2 out of the ocean, what are you going to do with it? Make it work for you. Carbon sequestration can be more useful than just pumping it into the ground. With the right techniques you can use excess CO2 to improve construction materials.  Seoni Kim, Michael Nitzsche, Simon B Rufer, Jack R. Lake, Kripa Kiran Varanasi, T. Alan Hatton. Asymmetric chloride-mediated electrochemical process for CO2 removal from oceanwater. Energy & Environmental Science, 2023; DOI: 10.1039/D2EE03804H Soumyabrata Roy, Firuz Alam Philip, Eliezer Fernando Oliveira, Gurwinder Singh, Stalin Joseph, Ram Manohar Yadav, Aparna Adumbumkulath, Sakib Hassan, Ali Khater, Xiaowei Wu, Praveen Bollini, Ajayan Vinu, George Shimizu, Pulickel M. Ajayan, Md Golam Kibria, Muhammad M. Rahman. Functional wood for carbon dioxide capture. Cell Reports Physical Science, 2023; 4 (2): 101269 DOI: 10.1016/j.xcrp.2023.101269

    Episode 522 - Making hydrogen greenly from Seawater

    Play Episode Listen Later Feb 20, 2023 14:22


    ​Hydrogen comes in all kinds of colours but what does that mean? Hydrogen has a role to play in a decarbonised world as long as we can produce it greenly. It's no good producing green hydrogen if you use up another valuable resource or create another kind of waste. Water water everywhere, but not a drop to electrolyse. Using seawater to make hydrogen has challenges. How can we use the abundant seawater resource to make green energy sources without producing nasty by products?  Suraj Loomba, Muhammad Waqas Khan, Muhammad Haris, Seyed Mahdi Mousavi, Ali Zavabeti, Kai Xu, Anton Tadich, Lars Thomsen, Christopher F. McConville, Yongxiang Li, Sumeet Walia, Nasir Mahmood. Nitrogen‐Doped Porous Nickel Molybdenum Phosphide Sheets for Efficient Seawater Splitting. Small, 2023; 2207310 DOI: 10.1002/smll.202207310

    Episode 521 - Galaxies at the Cosmic Dawn

    Play Episode Listen Later Feb 13, 2023 14:33


    Using the JWST to peer into the Cosmic dawn of the universe. The JWST enables researchers to peer into the earliest galaxies in our universe. 250 Million years is not a long time when it comes to a star or galaxy. With JWST researchers can see galaxies formed 250 million years after the Big Bang. To peer into the earliest universe you must use infrared to capture the faintest light. Using new instruments on the JWST researchers are able to see galaxies from 13.25 billion years ago. JWST also lets researchers investigate strange new types of spiral galaxies from the Cosmic Noon. Yoshinobu Fudamoto, Akio K. Inoue, Yuma Sugahara. Red Spiral Galaxies at Cosmic Noon Unveiled in the First JWST Image. The Astrophysical Journal Letters, 2022; 938 (2): L24 DOI: 10.3847/2041-8213/ac982b University of California - Santa Cruz. (2022, December 9). Astronomers report most distant known galaxies, detected and confirmed. ScienceDaily. Retrieved January 2, 2023 from www.sciencedaily.com/releases/2022/12/221209135542.htm

    Episode 520 - There and back again - tales from a wandering space probe

    Play Episode Listen Later Feb 6, 2023 18:03


    Hayabusa2 had an exciting voyage across our solar system, getting into dust ups and even coming back home again with data to share. We've been tracking the long journey of Hayabusa2 over the 10 years of this podcast, and we're now getting interesting data from the returned samples. The Hayabusa2 probe shot at the asteroid Ryugu and brought back proof for JAXA to study and it tells tales of a very early time in our solar system. Ryugu is much much older than we thought, born only 1.8 million years after the formation of our solar system. How does a planetary system form and why are some planets in a flat line and others really odd. Our Nepture is an anomaly not just in our solar system but also compared to others. What happened to all the other 'Hot Neptune' exoplanets? Did they get burnt off or flung away? Kaitlyn A. McCain, Nozomi Matsuda, Ming-Chang Liu, Kevin D. McKeegan, Akira Yamaguchi, Makoto Kimura, Naotaka Tomioka, Motoo Ito, Naoya Imae, Masayuki Uesugi, Naoki Shirai, Takuji Ohigashi, Richard C. Greenwood, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu Kodama, Kaori Hirahara, Ikuya Sakurai, Ikuo Okada, Yuzuru Karouji, Satoru Nakazawa, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Akiko Miyazaki, Masahiro Nishimura, Toru Yada, Masanao Abe, Tomohiro Usui, Sei-ichiro Watanabe, Yuichi Tsuda. Early fluid activity on Ryugu inferred by isotopic analyses of carbonates and magnetite. Nature Astronomy, 2023; DOI: 10.1038/s41550-022-01863-0. V. Bourrier, O. Attia, M. Mallonn, A. Marret, M. Lendl, P.-C. Konig, A. Krenn, M. Cretignier, R. Allart, G. Henry, E. Bryant, A. Leleu, L. Nielsen, G. Hebrard, N. Hara, D. Ehrenreich, J. Seidel, L. dos Santos, C. Lovis, D. Bayliss, H. M. Cegla, X. Dumusque, I. Boisse, A. Boucher, F. Bouchy, F. Pepe, B. Lavie, J. Rey Cerda, D. Ségransan, S. Udry, T. Vrignaud. DREAM. Astronomy & Astrophysics, 2023; 669: A63 DOI: 10.1051/0004-6361/202245004

    Episode 519 - Evolving beaks and wild chickens

    Play Episode Listen Later Jan 30, 2023 17:04


    How did birds end up with their trademark beaks? You can broadly group birds into two categories, ancient and modern jaws or beaks. We thought mobile beaks were a modern invention but new fossils overturn this idea. Just when did birds first develop their modern mobile beaks? Wild jungle fowl were domesticated to become the chickens we love today. But wild chickens are not isolated completely from modern ones. Gene transfers between wild and domesticated chickens are eroding the genetic diversity of the species. Benjamin A. Tonelli, Casey Youngflesh, Morgan W. Tingley. Geomagnetic disturbance associated with increased vagrancy in migratory landbirds. Scientific Reports, 2023; 13 (1) DOI: 10.1038/s41598-022-26586-0 Meng Yue Wu, Giovanni Forcina, Gabriel Weijie Low, Keren R. Sadanandan, Chyi Yin Gwee, Hein van Grouw, Shaoyuan Wu, Scott V. Edwards, Maude W. Baldwin, Frank E. Rheindt. Historic samples reveal loss of wild genotype through domestic chicken introgression during the Anthropocene. PLOS Genetics, 2023; 19 (1): e1010551 DOI: 10.1371/journal.pgen.1010551

    Episode 518 - Aurora on Jupiter and on Earth

    Play Episode Listen Later Jan 23, 2023 17:43


    Aurora are stellar examples of high energy physics. You need to be at the right spot to find Aurora on earth, but its not quite the same on Jupiter. What governs where and how an aurora will form? Earth and Jupiter are very different in size and speed, but why are our Auroras so different? How does Jupiter's magnetosphere bring all it's moons into line? What happens when an small independent moon brushes up against a super sized neighbour? Ganymede has it's own indepedent magnetic field. So what would happen if it got gobbled up by Jupiter? Binzheng Zhang, Peter A. Delamere, Zhonghua Yao, Bertrand Bonfond, D. Lin, Kareem A. Sorathia, Oliver J. Brambles, William Lotko, Jeff S. Garretson, Viacheslav G. Merkin, Denis Grodent, William R. Dunn, John G. Lyon. How Jupiter's unusual magnetospheric topology structures its aurora. Science Advances, 2021; 7 (15): eabd1204 DOI: 10.1126/sciadv.abd1204 R. W. Ebert, S. A. Fuselier, F. Allegrini, F. Bagenal, S. J. Bolton, G. Clark, J. E. P. Connerney, G. A. DiBraccio, W. S. Kurth, S. Levin, D. J. McComas, J. Montgomery, N. Romanelli, A. H. Sulaiman, J. R. Szalay, P. Valek, R. J. Wilson. Evidence for Magnetic Reconnection at Ganymede's Upstream Magnetopause During the PJ34 Juno Flyby. Geophysical Research Letters, 2022; 49 (23) DOI: 10.1029/2022GL099775

    Episode 517 - Cute green balls of algae and a changing climate

    Play Episode Listen Later Jan 16, 2023 14:02


    In the northern reaches of Japan in a idyllic lake, cute green balls of algae are battling for survival. It sounds like an anime, but cute green algae balls, Marimo, are battling stellar forces. Too much sunlight can endanger the cute green algae balls, the Marimo. Having too much sunlight can be just as bad for algae as too little. How can brown algae help fight back against climate change? Algae have changed the climate once before, so can they do it again? If you were to quantify the carbon sequestration of algae, would it really make an impact globally? Akina Obara, Mari Ogawa, Yoichi Oyama, Yoshihiro Suzuki, Masaru Kono. Effects of High Irradiance and Low Water Temperature on Photoinhibition and Repair of Photosystems in Marimo (Aegagropila linnaei) in Lake Akan, Japan. International Journal of Molecular Sciences, 2022; 24 (1): 60 DOI: 10.3390/ijms24010060 Hagen Buck-Wiese, Mona A. Andskog, Nguyen P. Nguyen, Margot Bligh, Eero Asmala, Silvia Vidal-Melgosa, Manuel Liebeke, Camilla Gustafsson, Jan-Hendrik Hehemann. Fucoid brown algae inject fucoidan carbon into the ocean. Proceedings of the National Academy of Sciences, 2022; 120 (1) DOI: 10.1073/pnas.2210561119

    Episode 517 - How our body senses and interacts with the world

    Play Episode Listen Later Jan 9, 2023 15:59


    Understanding how our body senses and interacts with the world. Scientists are only now beginning to understand how our body senses the world, hence the '21 Nobel Prizes. This Nobel prize wining research helped others find a connection between the gut and our sense of touch. Internal organ pain can be crippling and require side effect laden treatments. How do organs like the gut detect and transmit pain signals? The same mechanism to detect soft touch is used by your organs to send pain signals. How does our body precisely control temperature? What region of the brain measures and control what temperature to set itself to? Zili Xie, Jing Feng, Timothy J. Hibberd, Bao Nan Chen, Yonghui Zhao, Kaikai Zang, Xueming Hu, Xingliang Yang, Lvyi Chen, Simon J. Brookes, Nick J. Spencer, Hongzhen Hu. Piezo2 channels expressed by colon-innervating TRPV1-lineage neurons mediate visceral mechanical hypersensitivity. Neuron, 2022; DOI: 10.1016/j.neuron.2022.11.015 Yoshiko Nakamura, Takaki Yahiro, Akihiro Fukushima, Naoya Kataoka, Hiroyuki Hioki, Kazuhiro Nakamura. Prostaglandin EP3 receptor–expressing preoptic neurons bidirectionally control body temperature via tonic GABAergic signaling. Science Advances, 2022; 8 (51) DOI: 10.1126/sciadv.add5463

    Episode 516 - How plants handle too much or too little light

    Play Episode Listen Later Jan 2, 2023 18:25


    Too much or too little light can cause serious problems for plants. Light levels are not simply a feast or famine equation when it comes to photosynthesis. Plants must carefully manage the amount of light coming in to ensure smooth photosynthesis. The way genes in leaves responding to rapidly changing light conditions help them make the most of photosynthesis.  Your eyes have to rapidly respond to opening curtains in a dark room, just like leaves of a plant. What about plants that have abandoned the need for light at all? Can a plant survive or thrive without light or photosynthesis?  Thekla von Bismarck, Kübra Korkmaz, Jeremy Ruß, Kira Skurk, Elias Kaiser, Viviana Correa Galvis, Jeffrey A. Cruz, Deserah D. Strand, Karin Köhl, Jürgen Eirich, Iris Finkemeier, Peter Jahns, David M. Kramer, Ute Armbruster. Light acclimation interacts with thylakoid ion transport to govern the dynamics of photosynthesis in Arabidopsis. New Phytologist, 2022; 237 (1): 160 DOI: 10.1111/nph.18534 Kenji Suetsugu, Shun K. Hirota, Tian-Chuan Hsu, Shuichi Kurogi, Akio Imamura, Yoshihisa Suyama. Monotropastrum kirishimense (Ericaceae), a new mycoheterotrophic plant from Japan based on multifaceted evidence. Journal of Plant Research, 2022; DOI: 10.1007/s10265-022-01422-8

    Episode 515 - Do you really need oxygen for oxidation

    Play Episode Listen Later Dec 26, 2022 13:11


    How does chemistry change when you travel to another planet? When it comes to scientific experiments often we can be hampered by our own experience. Just because something is abundant on earth does not meant that it's a universal constant.  Out of this world chemistry is hard to get your head around and it requires thinking outside the box. Is it possible to have oxidize minerals without oxygen? Kaushik Mitra, Eleanor L. Moreland, Greg J. Ledingham, Jeffrey G. Catalano. Formation of manganese oxides on early Mars due to active halogen cycling. Nature Geoscience, 2022; DOI: 10.1038/s41561-022-01094-y

    Episode 514 - Pushing water to the limits on earth and in space

    Play Episode Listen Later Dec 19, 2022 11:12


    What happens when you push water to the limits on earth and in Space? Water has really weird properties especially when it gets really cold. How can we understand and model the behaviour when it moves to fast for us to capture? How do droplets form and why do you need the ISS to study it? What can microgravity tell us about the way droplets form? Thomas E. Gartner, Pablo M. Piaggi, Roberto Car, Athanassios Z. Panagiotopoulos, Pablo G. Debenedetti. Liquid-Liquid Transition in Water from First Principles. Physical Review Letters, 2022; 129 (25) DOI: 10.1103/PhysRevLett.129.255702 J. McCraney, J. Ludwicki, J. Bostwick, S. Daniel, P. Steen. Coalescence-induced droplet spreading: Experiments aboard the International Space Station. Physics of Fluids, 2022; 34 (12): 122110 DOI: 10.1063/5.0125279

    Episode 513 - An eerie glow in the Solar System

    Play Episode Listen Later Dec 12, 2022 16:39


    How do you measure the solar system and the universe whilst being inside of it? Too much light is a problem for astronomers and our solar system has it's own glow. If you take away all known light sources form the solar system, there is still a faint glow. We know about background radiation, but what about the solar systems background lighting? How can you test the curvature of the universe? To answer universal scale questions you need to start small. Really small. Using Bose Einstein condensates and getting really cold we can simulate curved universes in a molecule scale.  Timothy Carleton, Rogier A. Windhorst, Rosalia O'Brien, Seth H. Cohen, Delondrae Carter, Rolf Jansen, Scott Tompkins, Richard G. Arendt, Sarah Caddy, Norman Grogin, Scott J. Kenyon, Anton Koekemoer, John MacKenty, Stefano Casertano, Luke J. M. Davies, Simon P. Driver, Eli Dwek, Alexander Kashlinsky, Nathan Miles, Nor Pirzkal, Aaron Robotham, Russell Ryan, Haley Abate, Hanga Andras-Letanovszky, Jessica Berkheimer, Zak Goisman, Daniel Henningsen, Darby Kramer, Ci'mone Rogers, Andi Swirbul. SKYSURF: Constraints on Zodiacal Light and Extragalactic Background Light through Panchromatic HST All-sky Surface-brightness Measurements: II. First Limits on Diffuse Light at 1.25, 1.4, and 1.6 μm. The Astronomical Journal, 2022; 164 (5): 170 DOI: 10.3847/1538-3881/ac8d02 Celia Viermann, Marius Sparn, Nikolas Liebster, Maurus Hans, Elinor Kath, Álvaro Parra-López, Mireia Tolosa-Simeón, Natalia Sánchez-Kuntz, Tobias Haas, Helmut Strobel, Stefan Floerchinger, Markus K. Oberthaler. Quantum field simulator for dynamics in curved spacetime. Nature, 2022; 611 (7935): 260 DOI: 10.1038/s41586-022-05313-9

    Episode 512 - Analyzing aftershocks and predicting earthquakes

    Play Episode Listen Later Dec 5, 2022 18:31


    Forecasting an earthquake is serious business, but it's not like the weather. Why are earthquakes so hard to predict? Knowing when an earthquake will occur is hard enough, but what about predicting aftershocks? Aftershocks can create huge stress and compound damage after a quake so what can be done to predict them? Building huge scale models out of granite can help researchers better understand aftershocks. Sliding slabs of granite, plastic blocks and quartz dust help researchers understand aftershocks. When an earthquake combines with another disaster, the compound effect is devastating. How good are modern risk assessment tools at managing compound disasters?  Sara Beth L. Cebry, Chun-Yu Ke, Srisharan Shreedharan, Chris Marone, David S. Kammer, Gregory C. McLaskey. Creep fronts and complexity in laboratory earthquake sequences illuminate delayed earthquake triggering. Nature Communications, 2022; 13 (1) DOI: 10.1038/s41467-022-34397-0 Misato Uehara, Kuei-Hsien Liao, Yuki Arai, Yuta Masakane. Could the magnitude of the 3/11 disaster have been reduced by ecological planning? A retrospective multi-hazard risk assessment through map overlay. Landscape and Urban Planning, 2022; 227: 104541 DOI: 10.1016/j.landurbplan.2022.104541

    Episode 511 - How the earliest brains developed and handle touch

    Play Episode Listen Later Nov 28, 2022 16:59


    Peering into the history of brains with some amazing tiny fossils. How did the earliest brains develop? Is a head just an extension of a segmented body or something else entirely? How did the first brains and nervous systems evolve in arthropods. How does your body process the sense of touch? The faintest sensations of touch are handled by specialist cells in your spinal cord. How do your  brain stem and spinal cord help your body process the senses? Nicholas J. Strausfeld, Xianguang Hou, Marcel E. Sayre, Frank Hirth. The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains. Science, 2022; 378 (6622): 905 DOI: 10.1126/science.abn6264 Turecek, J., Lehnert, B.P. & Ginty, D.D. The encoding of touch by somatotopically aligned dorsal column subdivisions. Nature, 2022 DOI: 10.1038/s41586-022-05470-x Anda M. Chirila, Genelle Rankin, Shih-Yi Tseng, Alan J. Emanuel, Carmine L. Chavez-Martinez, Dawei Zhang, Christopher D. Harvey, David D. Ginty. Mechanoreceptor signal convergence and transformation in the dorsal horn flexibly shape a diversity of outputs to the brain. Cell, 2022; 185 (24): 4541 DOI: 10.1016/j.cell.2022.10.012

    Episode 510 - Fungi spreading across the planet and wiping out toxic soils

    Play Episode Listen Later Nov 21, 2022 17:31


    Fungi have an amazing ability to spread across continents but stay linked as a family lineage. Fungi can adapt to specific geographic niches in the same way as grapes. Different families of highly specialized mushrooms grow side by side across continents. How can fungi protect the plants it's attached to? Fungi often get a bad rap in farming, but they can be used to detoxify soils. Removing mercury and boosting crops; is there anything fungi can't do? Keaton Tremble, J. I. Hoffman, Bryn T. M. Dentinger. Contrasting continental patterns of adaptive population divergence in the holarctic ectomycorrhizal fungus Boletus edulis. New Phytologist, 2022; DOI: 10.1111/nph.18521 Congcong Wu, Dan Tang, Jin Dai, Xingyuan Tang, Yuting Bao, Jiali Ning, Qing Zhen, Hui Song, Raymond J. St. Leger, Weiguo Fang. Bioremediation of mercury-polluted soil and water by the plant symbiotic fungus Metarhizium robertsii. Proceedings of the National Academy of Sciences, 2022; 119 (47) DOI: 10.1073/pnas.2214513119

    Episode 509 - What connects spicy food, proteins and your gut

    Play Episode Listen Later Nov 14, 2022 17:53


    How is your gut connected to the rest of your body? How does your nervous system connect to your gut? How can you sense pain inside of your gut? The bacteria that live inside your gut can call for help when under pressure. With the wrong balance of bacteria or signalling proteins our guts can be more prone for inflammation and damage. How can bad bacteria escape from the gut and evade detection? What enables some bacteria to sneak out of the intestine and wreck havoc. Wen Zhang, Mengze Lyu, Nicholas J. Bessman, Zili Xie, Mohammad Arifuzzaman, Hiroshi Yano, Christopher N. Parkhurst, Coco Chu, Lei Zhou, Gregory G. Putzel, Ting-Ting Li, Wen-Bing Jin, Jordan Zhou, Hongzhen Hu, Amy M. Tsou, Chun-Jun Guo, David Artis. Gut-innervating nociceptors regulate the intestinal microbiota to promote tissue protection. Cell, 2022; DOI: 10.1016/j.cell.2022.09.008 Yusibeska Ramos, Stephanie Sansone, Sung-Min Hwang, Tito A. Sandoval, Mengmeng Zhu, Guoan Zhang, Juan R. Cubillos-Ruiz, Diana K. Morales. Remodeling of the Enterococcal Cell Envelope during Surface Penetration Promotes Intrinsic Resistance to Stress. mBio, 2022; DOI: 10.1128/mbio.02294-22

    Episode 508 - Finding your way as a fish along rivers and into the deep

    Play Episode Listen Later Nov 7, 2022 17:36


    How can fish keep themselves stable in a fast flowing river? What's the best way to stay on track as a fish? To swim straight ahead fish often end up staring downwards. The riverbed is way easier to track than a fast flowing current. How did fish manage to make their way into the deepest parts of the ocean? What climatic factors drove fish to explore deeper and deeper? What changed in Earth's history to encourage fish to thrive in the deepest parts of oceans? Emma Alexander, Lanya T. Cai, Sabrina Fuchs, Tim C. Hladnik, Yue Zhang, Venkatesh Subramanian, Nicholas C. Guilbeault, Chinnian Vijayakumar, Muthukumarasamy Arunachalam, Scott A. Juntti, Tod R. Thiele, Aristides B. Arrenberg, Emily A. Cooper. Optic flow in the natural habitats of zebrafish supports spatial biases in visual self-motion estimation. Current Biology, 2022; DOI: 10.1016/j.cub.2022.10.009 Elizabeth Christina Miller, Christopher M. Martinez, Sarah T. Friedman, Peter C. Wainwright, Samantha A. Price, Luke Tornabene. Alternating regimes of shallow and deep-sea diversification explain a species-richness paradox in marine fishes. Proceedings of the National Academy of Sciences, 2022; 119 (43) DOI: 10.1073/pnas.2123544119

    Episode 507 - Peering beneath Mars' surface

    Play Episode Listen Later Oct 31, 2022 16:04


    How does a single sensor help change your outlook on a planet? A single small seismometer on Mars can help understand Mars' past, present and future. What do an ultrasound and Mars have in common? Both can use a single sensor to peer deep inside. Listening to the echoes of marsquakes helps researchers understand what's in Mars' core. Modelling the inside of Mars' core helps researchers understand its past and future. Mars is often thought to be volcanically dead, but there are signs of some activity. A cluster of marsquakes can help researchers find evidence of vulcanism on Mars. Sheng Wang, Hrvoje Tkalčić. Scanning for planetary cores with single-receiver intersource correlations. Nature Astronomy, 2022; DOI: 10.1038/s41550-022-01796-8 Simon C. Stähler, Anna Mittelholz, Cleément Perrin, Taichi Kawamura, Doyeon Kim, Martin Knapmeyer, Géraldine Zenhäusern, John Clinton, Domenico Giardini, Philippe Lognonné, W. Bruce Banerdt. Tectonics of Cerberus Fossae unveiled by marsquakes. Nature Astronomy, 2022; DOI: 10.1038/s41550-022-01803-y

    Episode 506 - Assimilating all microbes in it's path to chow down on Methane

    Play Episode Listen Later Oct 24, 2022 15:41


    How have microbes changed the course of life on our planet? How has our atmosphere changed as a result of bacteria and archaea? Assimilation can help enhance single cellular life. Archaea can collect long strings of extra genes just in case. Finding the right gene at the right moment can help Archaea make the most of available food. Basem Al-Shayeb, Marie C. Schoelmerich, Jacob West-Roberts, Luis E. Valentin-Alvarado, Rohan Sachdeva, Susan Mullen, Alexander Crits-Christoph, Michael J. Wilkins, Kenneth H. Williams, Jennifer A. Doudna, Jillian F. Banfield. Borgs are giant genetic elements with potential to expand metabolic capacity. Nature, 2022; DOI: 10.1038/s41586-022-05256-1

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